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-rw-r--r--Documentation/devicetree/bindings/regulator/regulator.txt1
-rw-r--r--drivers/regulator/core.c9
-rw-r--r--drivers/regulator/of_regulator.c3
-rw-r--r--include/linux/regulator/driver.h1
-rw-r--r--include/linux/regulator/machine.h1
5 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index db88feb28c03..24bd422cecd5 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -42,6 +42,7 @@ Optional properties:
- regulator-system-load: Load in uA present on regulator that is not captured by
any consumer request.
- regulator-pull-down: Enable pull down resistor when the regulator is disabled.
+- regulator-over-current-protection: Enable over current protection.
Deprecated properties:
- regulator-compatible: If a regulator chip contains multiple
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index c9f72019bd68..520413e2bca0 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1081,6 +1081,15 @@ static int set_machine_constraints(struct regulator_dev *rdev,
}
}
+ if (rdev->constraints->over_current_protection
+ && ops->set_over_current_protection) {
+ ret = ops->set_over_current_protection(rdev);
+ if (ret < 0) {
+ rdev_err(rdev, "failed to set over current protection\n");
+ goto out;
+ }
+ }
+
print_constraints(rdev);
return 0;
out:
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index b1c485b24ab2..250700c853bf 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -107,6 +107,9 @@ static void of_get_regulation_constraints(struct device_node *np,
if (!of_property_read_u32(np, "regulator-system-load", &pval))
constraints->system_load = pval;
+ constraints->over_current_protection = of_property_read_bool(np,
+ "regulator-over-current-protection");
+
for (i = 0; i < ARRAY_SIZE(regulator_states); i++) {
switch (i) {
case PM_SUSPEND_MEM:
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 4db9fbe4889d..45932228cbf5 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -148,6 +148,7 @@ struct regulator_ops {
int (*get_current_limit) (struct regulator_dev *);
int (*set_input_current_limit) (struct regulator_dev *, int lim_uA);
+ int (*set_over_current_protection) (struct regulator_dev *);
/* enable/disable regulator */
int (*enable) (struct regulator_dev *);
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index b11be1260129..a1067d0b3991 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -147,6 +147,7 @@ struct regulation_constraints {
unsigned ramp_disable:1; /* disable ramp delay */
unsigned soft_start:1; /* ramp voltage slowly */
unsigned pull_down:1; /* pull down resistor when regulator off */
+ unsigned over_current_protection:1; /* auto disable on over current */
};
/**